as for the story, it was unique where two phones near each other could tell whether you love the specific person. it was nice, yeah. i thought of downloading that app bc it seems so cool. NOW for my review, i think sun-oh is um toxic. he clearly knows that his bestfriend has feelings for jojo but he still kissed her knowing jojo has a BOYFRIEND. im waiting for season 2 hoping that jojo would end up with hye-young. if not then HYE-YOUNG deserves so much better. he's actually so kind and is always there for jojo. it'd be another school 2015 if they don't end up w/ each other.